<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <style>
        .tip-box{
            width:489px;
            height: 452px;
            box-sizing: border-box;
            margin: 0 auto;
            padding: 50px;
            margin-top: 200px;
            line-height: 25px;
            background-color: #fff;
            background: url("images/panel.png") 0 0 no-repeat;
        }
        .tip-box>h3{
            text-align: center;
        }
        ul.bom{
            list-style: none;
            margin: 0;
            padding: 0;
            margin-top: 20px;
        }
        ul.bom>li{
            float: left;
            width: 180px;
        }
        ul.bom>li>a>img{
            border: 0;
        }
        ul.bom>li.firefox{
            margin-right: 10px;
        }
    </style>
</head>
<body>
<div class="tip-box">
    <h3>请升级您的浏览器</h3>
    <div>
        尊敬的用户,您现在使用的Internet&nbsp;Explore浏览器版本过低,建议您升级至Internet&nbsp;Explore&nbsp;11版本或其他浏览器(如:Google&nbsp;Chrome或Mozilla&nbsp;Firefox),以便您能继续访问线上教育平台
    </div>
    <ul class="bom">
        <li class="firefox"><a href="http://www.googlechromer.cn/"><img src="images/chrome.png" alt=""/></a></li>
        <li><a href="https://support.microsoft.com/zh-cn/help/18520/download-internet-explorer-11-offline-installer"><img src="images/internet.png" alt=""/></a></li>
        <li><a href="http://www.firefox.com.cn/"><img src="images/firefox.png" alt=""/></a></li>
    </ul>
</div>
</body>
</html>